Andalusite Vs Achroite
Origin
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Afghanistan, Sri Lanka
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Colorless, Blue
Specific Gravity
3.05-3.21
2.90-3.40
Fracture
Uneven, Subconchoidal, Splintery
Uneven, ConchoidalWalter Schumann
Cleavage
Good on {110}, poor on {100}
Indiscernible
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Luster
Vitreous, Greasy
-
Pleochroism
strongly trichroic
-
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.627-1.650
1.614-1.666
Crystal System
Orthorhombic
-
Birefringence
0.009-0.010
0.014-0.040
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
-
Respiratory
Excellent
Excellent
Psychology
Perception
Balance
Healing
Physical healing
Emotional healing
Qualities Associated
Self-Realization
Spiritual Growth
Andalusite Vs Achroite Fracture
Fracture is an important parameter when you compare Andalusite and Achroite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Achroite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Andalusite is Uneven, Subconchoidal and Splintery. Achroite fracture is Uneven and ConchoidalWalter Schumann.
Andalusite Vs Achroite Luster
A primary knowledge about Andalusite vs Achroite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Andalusite exhibits Vitreous and Greasy luster.